#194 Postby weatherdude1108 » Fri Jun 10, 2022 2:50 pm
Man, it's like we're in a bad dream.
Wake me up when when it's over.
Area Forecast Discussion...UPDATED
National Weather Service Austin/San Antonio TX
208 PM CDT Fri Jun 10 2022
...New UPDATE...
.UPDATE...
Issued at 206 PM CDT Fri Jun 10 2022
Updated to correct the Heat Advisory time in the
EWX WATCHES/WARNINGS/ADVISORIES section below.
&&
.SHORT TERM...
(Tonight through Saturday night)
Issued at 114 PM CDT Fri Jun 10 2022
Some fair cumulus are present this afternoon mainly across the
Coastal Plains. Also, the latest GOES 16 visible satellite images
show a weak outflow pushing down the northern part of the Hill
Country associated with the MCV moving across east Texas and
northwest Louisiana. Other than that, the topic for the rest of today
is the heat. Temperatures will continue to warm for the rest of this
afternoon to reach the upper 90s across the Hill Country and up to
104 degrees along the Rio Grande and Coastal Plains.
A Heat Advisory is in effect for portions of the Hill Country, the I-
35 corridor and the Coastal Plains through 7 PM this evening. The
hot and dry weather conditions continue tonight into Saturday.
Overnight lows in the 70s are expected across South Central Texas.
For Saturday, the subtropical high pressure ridge over the southwest
region is forecast to push to the east and promote even hotter
conditions across our CWA. Saturday`s highs are forecast to range
from 100 to 108 degrees. With that said, we have opted to issue a
Heat Advisory for the entire area for Saturday afternoon and early
evening. There may be a few locations not meeting the Heat Advisory
criteria and on the other hand, a few locations could be flirting
with Excessive Heat Warning criteria. Therefore, to capture the main
message of the dangerous heat, a Heat Advisory for the entire area
brings that awareness for the short term period.
Another warm night is in store for Saturday with lows in the 70s.
Unfortunately, the heat continues into the long forecast period. See
below.
&&
.LONG TERM...
(Sunday through Thursday)
Issued at 114 PM CDT Fri Jun 10 2022
The heat looks to peak on Sunday across the region as the center of
the 500mb high expands just north of the area. NAEFS mean 850mb
temperatures are in the 97-99th percentile for this time of year over
portions of the CWA. From a messaging standpoint, and the fact that
it`s the weekend and more people outdoors, we will be extending the
Heat Advisory all the way through Sunday given the high confidence.
There is a possibility portions of the CWA, near the I-35 corridor,
could be close to Excessive Heat Warning criteria Sunday. We will
re-visit that potential headline in tomorrow`s package.
The center of the 500mb ridge does slide east into the Tennessee
Valley on Monday and amplifies Tuesday and Wednesday. Heights
fall over South Central Texas during this time and a weak inverted
500mb trough is forecast to slide westward into the region. Max
temperatures Monday through Wednesday do look to back off a couple of
degrees each day, but still hot and well above averages for this
time of year.
There are some indications in the global models of some spotty QPF
the middle to latter portion of the week, however confidence is too
low to mention in the official forecast at this time.
Two few other items...fire weather conditions may become elevated to
near-critical over the weekend and into early next week as the hot
conditions continue to dry fuels out, minimum RH values in the teens
and 20s are forecast, and wind speeds increase. Also, we are tracking
an expansive Saharan Dust Plume from the Yucatan all the way back to
Africa. Model guidance indicates the leading edge of this plume
arriving into South Central Texas Sunday morning, and persisting
through the week. This could lead to hazy conditions, along with
vivid sunsets/sunrises and a milk-white appearance to the sky in the
middle of the day.
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